#!/bin/bash
# filename: os_vendor.sh

echo -n "请输入操作系统名称: "
read os_name

case $(echo "$os_name") in
    linux|Linux)
        echo "红帽"
        ;;
    windows|Windows)
        echo "微软"
        ;;
    macos|Macos)
        echo "苹果"
        ;;
	
    *)
        echo "其他"
        ;;
esac
